Improvement in sxiidxng doors



2' Sheets-Sheet 1. J. CAPRON.

SLIDING DOOR.

N0.100,373. Q Pate-nted Mar. 1, 1870.

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2 Sheets-Sheet 2 J. CAP'RON. SLIDING 11003.

No. 100,378. PatentedMan-l, 1870.

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JACOB o'APRoN, or NEW YORK, N. Y.

' Letters Patent No. 100,373, dated March. 1, 1870.

IMPROVEMENT IN SLIDING- DOORS.

lb all whom it may concern:

Be it known that I, JACOB CAPRON, of the city of New York, in the county and State of New York, have invented certain Improvements in Sliding-Door Apparatus; and I do hereby declare that the following is a full and exact description thereof, reference being had .to' the accompanying drawings and the letters of reference marked thereon.

The nature of my invention consists in providing two sets of sheaves, and two .sets of ways or guides, upon which the sheave-pulleys run, and while ,one of said ways is fixed rigid and stationary, the other- Iso govern with springs as to insure its constant pressure against the sheave-pulleys, which are guided'by it, and, at the same time, by this means secure an elasticity in the working of the door which prevents jarring and undue friction, the main object being to prevent the sheave-pulley from jumping the track, guide, or way, and to keep the doorin a steady horizontal course, in whatsoever way the power may be, applied to move it.

It also consists of a spring-bar or way, of construction to be hereinafter more fully described, arranged to press upon sheaves placed within or upon the door.

In the accompanying drawings the several parts and the working of my apparatus are described.

In Figure 1 is represented a pair of doors with ordinary sheaves and ways at the bottom, and with my duplicate or additional sheaves and spring-ways at the top, as at A, the way sustained in its position by the brackets B, G, D, and E.

The construction of this way and brackets is shown' more at large by Figures 2, 3, and 4, fig. 2 being a front elevation, fig. 3 a side elevation, and fig. 4 a plan of said bracket and way.

The way is constructed in a manner to secure stiffness, as shown by the section at F, fig. 2, which form I prefer, and is, moreover, provided with spindles or rods, firmly secured'to the top, as at G, figs. 2, 3, and 4, and playing freely through perforations in the arms H and I of said bracket, but being pressed downby the action of the spring J, which acts against a shoulder in the spindle at K, fig. 2, and against the upper arm I of the bracket, thelatter being secured with screws to a beam provided to receive it- These spindles and brackets, being placed at frequent intervals in the length of the way, secure the object above referred to. v

In Figureii is represented a pair of doors, which is hung upon sheaves and ways to run at the to In this case,'I sccure the wayiu'a permanent fixed position, in the ordinary manner, as at L, and provide my additional way above the said fixed way, as at M, said additional way being governed as to its position by the spring, spindles, and brackets above described,

as at N and O, and also by terminal springs at either end. as at P and Q.

. The sheaves, in this case, I make with double pulleys, as at B and S.

Moreover, to keep-the door in its proper vertical position, I provide aflange in the bottom thereof, to run between two spring-rollers, and to be received at the back end of the way into a spring clasp, as at 'l, U, V, and W, fig. 5.

The" construction of these several parts is shown more at large in Figures 6, 7, 8, 9, 10, 11, 12,13, and 14.

Figs. 6 and 9 are front elevations, fig. 7 is a section,

fig. 8 is an end elevation, and fig. I4 is a plan of the ways.

a is tho-fixed way, and

b is the spring-way.

c is the spring which holds the springway down at the ends thereof, and

ll is the post, terminating at top in a tenon or guide, e, upon which the'spring-way plays by means of a perforation in the ends thereof, all as shown.

Figs. 10 and 11 represent 'theconstruction 0f the sheave, which is provided with an additional pulley, f, as shown. Fig. 10 is afi'ont elevation, and fig. 11 is a section of said sheave.

The sheave described moves in slotted ways, as clearly shown in fig. 10.

Fig. 13 represents a plan of the spring-rollers located at U and V, fig. 5.

The roller 9 is provided with a spring, 71-, which keeps it up against the flange c, said roller having a movable axle, which plays in a slot in the platej,.the spring being concealed beneath said plate.

Fig. 12 represents the spring-catch, which is located at W, fig. 5. It consists of two dogs, k and l, which ,are loosely centered at m and n, and pressed together By-means of these dogs the flange by the spriiig 0. on' the bottom of the door is caught and held, and the door maintained in its vertical position, thus preventing the warping of the door.

I also propose to apply this apparatus to shutters, sashes, and all similar articles to which it may be applied with advantage.

I donot claim, broadly, supporting the doorbetween ways by springs, or as shown in the patent of Prodhomme and Leprohon, nor do I claim the slotted bearings of the sheaves; but

Having thusfully described my invention,

WVhat I claim, and desire to secure by Letters Patent of the United States, is'

1. A device for supporting sliding doors, shutters, and sashes, consisting of brackets attached to the top of the door, provided with a double system of sheaves,

one set of which runs on a fixed rail and the other roils rooms 2 I simiiar sheaves rolling upon a rail below, all as set forth.

'4. The pecnlia'r construction of the bracket, with its arms H and I, spring J, and shoulder-spindle K, and rail, all made and operating with the door, as shown and described.

JACOB OAPRON.

Witnesses:

R. F. HATFIELD, O. P. HsTFmLn. 

